Alrighty. Let's see how well the Graelings go at figuring out what the hell happened, and making pursuit. You left no witnesses, and extracted without causing a fuss. So I'm going to roll a sort of "Perception check" for the town, but I'll give it a -10 for the clean extraction and -10 for the no witnesses.

GraelingMootPerceptionVs20 - (1d100)[40]

IfTheyPerceivePursuitRollVs50 - (1d100)[92]